Sunil Kumar Nayak

Environmental Arsenic Exposure and Male Fertility: A Critical Narrative Review of Human Evidence, Mechanisms and Translational Uncertainty

Sunil Kumar Nayak, Bhuneshwar Behra, Mohammed Shoeb & Alka Mishra · Asian Journal of Biology · 2026

Arsenic is a widespread environmental metalloid whose inorganic forms contaminate drinking water, food chains, soil and air. Male reproductive toxicity is biologically plausible because spermatogenesis, steroidogenesis and post-testicular sperm maturation depend on tightly regula...

Open access Research Article 10.9734/ajob/2026/v22i7678

Lifestyle Factors and Semen Parameters in Rural and Urban Populations of Chhattisgarh: A Systematic Review

Bhuneshwar Behra, Sunil Kumar Nayak, Mohammed Shoeb & Alka Mishra · Asian Journal of Biology · 2026

Background: Regional evidence linking modifiable exposures with semen quality in Chhattisgarh is sparse, and clinic or agricultural settings cannot be assumed to represent urban or rural residence. Objective: To synthesise associations between lifestyle-related or occupational/en...

Open access Research Article 10.9734/ajob/2026/v22i9690